and of course there are cheaper ways to send messages to other computers, what makes it worth a whole $0.001 or whatever is the CONSENSUS ON TIMING, that anyone with just the block headers can follow the merkle roots to verify WHEN a piece of data existed .. that's absolutely essential for money, tokens, contracts, gaming, publication, anything where you need to be able to verify the order of when things happened ,, the only other choice is just to trust central authorities not to backdate thing
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